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36 lines
1004 B
PHP
36 lines
1004 B
PHP
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<?php
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namespace Moserware\Skills;
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/// <summary>
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/// Verifies argument contracts.
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/// </summary>
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/// <remarks>These are used until .NET 4.0 ships with Contracts. For more information,
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/// see http://www.moserware.com/2008/01/borrowing-ideas-from-3-interesting.html</remarks>
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class Guard
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{
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public static function argumentNotNull($value, $parameterName)
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{
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if ($value == null)
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{
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throw new Exception($parameterName . " can not be null");
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}
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}
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public static function argumentIsValidIndex($index, $count, $parameterName)
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{
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if (($index < 0) || ($index >= $count))
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{
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throw new Exception($parameterName . " is an invalid index");
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}
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}
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public static function argumentInRangeInclusive($value, $min, $max, $parameterName)
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{
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if (($value < $min) || ($value > $max))
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{
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throw new Exception($parameterName . " is not in the valid range [" . $min . ", " . $max . "]");
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}
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}
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}
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?>
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